What is asteroid sarcoma?

Osteosarcoma?: While "asteroid sarcoma" is not described in the medical or astronomy literature, it sounds a lot like osteosarcoma, so I presume that was the question. Osteosarcoma is a rare cancer of bones that usually occurs in teenagers. Treatment is with chemotherapy and surgery. In many cases, it can be cured, especially if it is caught before it spreads. Amputation is required only rarely.